Exact BER performance of asynchronous DS-CDMA systems using quadriphase spreading and QPSK modulation over rayleigh channels

Author

Liu, Xiang ; Hanzo, Lajos

Author_Institution

Sch. of Electron. & Comput. Sci., Southampton Univ.

Volume

2

fYear

2006

fDate

3-6 April 2006

Firstpage

1125

Lastpage

1129

Abstract

An accurate closed-form expression is derived for calculating the average BER in an asynchronous DS-CDMA system using random complex-valued spreading sequences for transmission over Rayleigh channels. This accurate solution is based on the characteristic function (CF) approach and only requires a single numerical integration. Our numerical simulation results verify its accuracy, and also demonstrate the relative inaccuracy of the Gaussian approximation

Keywords

Rayleigh channels; approximation theory; code division multiple access; error statistics; integration; quadrature phase shift keying; spread spectrum communication; BER performance; Gaussian approximation; QPSK modulation; Rayleigh channels; asynchronous DS-CDMA systems; characteristic function; numerical integration; quadriphase spreading; random complex-valued spreading sequences; Bit error rate; Closed-form solution; Computer science; Frequency division multiaccess; Gaussian approximation; Multiaccess communication; Numerical simulation; Performance analysis; Quadrature phase shift keying; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2006. WCNC 2006. IEEE

Conference_Location

Las Vegas, NV

ISSN

1525-3511

Print_ISBN

1-4244-0269-7

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2006.1683628

Filename

1683628